Куприенко, Николай Владимирович. Статистика. Методы анализа распределений. Выборочное наблюдение: учебное пособие / Н. В. Куприенко, О. А. Пономарева, Д. В. Тихонов; Санкт-Петербургский государственный политехнический университет. — Санкт-Петербург: Изд-во Политехн. ун-та, 2009 (Санкт-Петербург, 2020). — 1 файл (9,71 Мб). — Загл. с титул. экрана. — Цифровая копия печатной публикации 2009 г. — Доступ по паролю из сети Интернет (чтение, печать, копирование). — <URL:http://elib.spbstu.ru/dl/2/si20-811.pdf>. — DOI 10.18720/SPBPU/2/si20-811. — Текст: электронный
|
Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2021
|
Quarter 1
|
January
|
1
|
0
|
0
|
0
|
1
|
|
February
|
0
|
0
|
2
|
0
|
2
|
|
March
|
0
|
0
|
1
|
0
|
1
|
|
Quarter 2
|
April
|
0
|
0
|
1
|
0
|
1
|
|
May
|
0
|
0
|
0
|
0
|
0
|
|
June
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 3
|
July
|
0
|
0
|
1
|
0
|
1
|
|
August
|
0
|
0
|
0
|
0
|
0
|
|
September
|
20
|
0
|
2
|
0
|
22
|
|
Quarter 4
|
October
|
17
|
0
|
15
|
0
|
32
|
|
November
|
6
|
0
|
1
|
0
|
7
|
|
December
|
3
|
0
|
2
|
0
|
5
|
|
Year 2022
|
Quarter 1
|
January
|
0
|
0
|
0
|
0
|
0
|
|
February
|
2
|
0
|
0
|
0
|
2
|
|
March
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 2
|
April
|
1
|
0
|
0
|
0
|
1
|
|
May
|
1
|
0
|
0
|
0
|
1
|
|
June
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 3
|
July
|
0
|
0
|
0
|
0
|
0
|
|
August
|
0
|
0
|
0
|
0
|
0
|
|
September
|
22
|
0
|
3
|
0
|
25
|
|
Quarter 4
|
October
|
14
|
0
|
2
|
0
|
16
|
|
November
|
4
|
0
|
0
|
0
|
4
|
|
December
|
3
|
0
|
0
|
0
|
3
|
|
Year 2023
|
Quarter 1
|
January
|
3
|
0
|
0
|
0
|
3
|
|
February
|
0
|
0
|
1
|
0
|
1
|
|
March
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 2
|
April
|
0
|
0
|
0
|
0
|
0
|
|
May
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
97
|
0
|
31
|
0
|
128
|
